Comments about GNC Pro Performance® Shaker Cup:

Great overall design and look. I like the size and the feel when holding it. It's easy to drink out of BUT unfortunately that is all ruined by the poor lid design. I have read the reviews and followed the advice of others in the reviews and yet my lids don't lock in properly cause leakage when mixing (only if the shaker 3/4 full or more). It can't be a defect as I bought 2 of these and both have the same issue. I tried pressing down hard on the lid to try and lock it and cracked one of them.

It's the in part of the lid that doesn't lock in and I believe what's causing it is the curved design that the lid is connected to as it restricts the lid from going down further.

I can only use it as a drinking cup now rather than a shaker cup

Again it's a real shame because I really really like the over all design and look of it :(

Comments about GNC Pro Performance® Shaker Cup:

It looks pretty good, but you can´t clean it and it opens way to easy. Already spilled it over some stuff because it just opened

Comments about GNC Pro Performance® Shaker Cup:

This thing is hard to get sealed for shaking. It never seems to stay closed as the odd shaped top is just awful. When you do want it open, it is difficult to get under the malformed lip to lift it. Good luck getting it closed again. I am throwing this away and getting a normal Blender bottle.

Comments about GNC Pro Performance® Shaker Cup:

U must be kidding me! It's the worst bottle Ever! I Just used it twice, then the lid broke!

Comments about GNC Pro Performance® Shaker Cup:

Mixes powder drinks with no lumps,,

Comments about GNC Pro Performance® Shaker Cup:

I like the new design. I still use the stainless stel ball from my old one, mixes well, almost no lumps in Whey or Casein. Easy to clean.

Comments about GNC Pro Performance® Shaker Cup:

By far the best product I've used for my pre workout shakes. It has a rim in the center and it actually does what it says and prevents the residue from getting stuck in the drinking cap. It's easy to clean and it isn't messy at all if you use it correctly. You have to tighten the top all the way and then turn it a little harder at the end, you'll feel it lock in place. The you have to click both sides of the lid because it is oval shaped for it to completely lock in place and then go ahead and shake it like a maniac nothing will spill I promise. The only thing I don't like about is is the oval mouth piece to drink is pretty big so I have to put my entire mouth around it so I don't spill it on me while I'm working out. All in all it doesn't stop me from using it.

Comments about GNC Pro Performance® Shaker Cup:

Great Product got it for free but its well worth the money if you are looking to buy

Comments about GNC Pro Performance® Shaker Cup:

this doesnt leak like the reviews say! you just got hear the click when you press down so its not open! awesome 5 stars!

Comments about GNC Pro Performance® Shaker Cup:

I dont know if I have a defective product but when you shake the container the protein / liquid goes EVERYWHERE. It is all over my clothes and desk. Tightened the lid twice and SAME THING. I would recommend the regular GNC shaker. DO NOT BUY.